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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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Description
3.97mm f/2.8 82d HFOV 16MP (No Distortion)(Visible - IRCUT)The 3. 97mm is a superb 4K lens designed for the GoPro HERO 4 3+ 3 camera line, it will not work in GoProHERO 7 6 5 cameras. With its 16MP sharp 8 glass non fisheye optics this lens captures the GoPro HERO 4, Hero 3+ and Hero 3 model's 12MP photos and up to 4k (8. 4MP) video. After removing the stock lens the 3. 97mm threads in easily. No need to change to a different lens mount and all GoPro accessories that mount around the plastic black lens
The 3.97mm is a superb 4K lens designed for the GoPro® HERO® 4/3+/3 camera line, it will not work in GoPro®HERO® 7/6/5 cameras. With its 16MP sharp 8 glass non-fisheye optics this lens captures the GoPro® HERO® 4, Hero 3+ and Hero 3 model's 12MP photos and up to 4k (8.4MP) video.
After removing the stock lens the 3.97mm threads in easily. No need to change to a different lens mount and all GoPro® accessories that mount around the plastic black lens surround are supported. No gap is present between the lens and the black GoPro® lens surround as the 3.97mm lens spans the entire cavity.
No fisheye/barrel distortion means objects are naturally straight and just as your eyes see the world. Mounting to a UAV? You'll be glad to know that's exactly where we mounted this lens the most as we were tweaking its production. See the videos below for examples mounted to the 3DR SOLO.
With the same f-stop as the stock lens the GoPro® software will never know the lens has been changed. Light levels will be handled as normal and depth of field will be very similar.
With it being over 40 degrees narrower than the stock GoPro® lens and 8 degrees narrower than the DJI Inspire and Phantom 3 cameras, this lens brings your subjects closer without being too zoomed in to introduce unwanted image jitter.
If you've thought of changing the lens on your camera but were never happy with the way the lenses on the market handled lens flare, you'll be glad to know that was a major concern of ours during development. We went through many iterations to reduce any "bad", concentrated flare spots and left only minimal cinematic flare. See the "Sunset at Scripps Pier" video below for an example.
| When you change the lens on the GoPro® HERO® cameras we recommend having us remove the stock lens profile software so the colors are natural (and not tinted pink around the edges). All example media shown has this lens profile removed from the camera. |
| Don't want to worry about sending you camera in to be modified? We sell new cameras with this lens installed HERE. |
| Model Number | GP39728 |
| Focal Length | 3.97mm |
| 35mm Equivalent | 22.63mm |
| Fish-eye Distortion | NO |
| Black Vignetting | NO |
| Weight (Stock Lens = 5.5g) | 7.18g |
| Angle of View (V*H*D) | 65 x 82 x 92 degrees |
| Aperture (f Stop) | 2.8 |
| Back Focal Length (BFL) | 4.65mm |
| Dimensions (Diameter x Length) | 17.40 x 22.48mm |
| Native Camera Sensor Support | 1/2.3" |
| Native Megapixel Support | 16MP |
| Thread Material | Metal |
| Optics Material | Glass |
| Fits in GoPro Waterproof Case? | Yes (Pressure on Lens Will Cause it to Shift Focus, So Use Extended Backdoor) |
| Case Mod Needed? | No (But Puts Less Pressure on Lens) |
| Dust Ring Included? | Yes (DR_A + DR_B) |
Works With These Cameras:
Example 3.97mm Media:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
EPOTX
Size: One Size, Color: Tan - Passcase
Nice wallet arrived as advertised
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Great value for very good quality.
Size: One Size, Color: Brown - Magnetic Front Pocket
Perfect wallet to start a teen with. Holds everything they will need me does so in tidy fashion.
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Reviewed in the United States on December 25, 2025
★★★★★ 4
Nice
Size: One Size, Color: Black - Trifold
This is great quality and a nice design. It has plenty of slots for all my cards and bid enough for some cash. The only downside is the price as it’s a bit overpriced for what it is.
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Reviewed in the United States on January 25, 2025
★★★★★ 5
Calidad
Size: One Size, Color: Black - Passcase
Esta billetera es muy super! 100% calidad garantizada
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Reviewed in the United States on July 10, 2025
★★★★★ 5
Excellent trifold wallet from Tommy! Beautiful design.
Size: One Size, Color: Tan - Trifold, Size: One Size, Color: Tan - Trifold
This Tommy Hilfiger Trifold wallet is luxurious in its look, feel, design, and function. It feels wonderful in the hand, with the smooth tie fabric-like inlay and great quality leather inside. I admire its unique look and design, which really stands out in the crowd of more plain leather wallets and metal wallets. I wish it had a button clasp, but if it stays in your pocket and in your hands, you shouldn't have a concern about anything getting loose on you. The card slots are accommodating in size and grip your cards easily, and I really appreciate that it has RFID protection, which keeps your chip cards safe and protected. This is an excellent everyday wallet and a very good choice. Highly recommended!
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Reviewed in the United States on December 15, 2024